using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace ConsoleApp1
{
    class Program
    {

        public enum ItemType { MessageType, PersonType, CarType };


        #region Abstract MenuItem class
        abstract public class MenuItem
        {
            public MenuItem()
            {
                timeCreated = DateTime.Now;
            }

            public DateTime timeCreated { get; private set; }

            public virtual void Print()
            {
                Console.Write("[" + timeCreated.ToString() + "]");
            }
        }
        #endregion

        #region Message class
        public class Message : MenuItem
        {
            private Message()
            {
            }

            public Message(string newMsg) : base()
            {
                msg = newMsg;
            }
            public override void Print()
            {
                base.Print();
                Console.Write(" [Message] " + msg);
            }
            private string msg;
        }
        #endregion

        #region Person class
        public class Person : MenuItem
        {
            private Person()
            {
            }

            public Person(string newName, string newLastName, int newAge) : base()
            {
                name = newName;
                lastName = newLastName;
                age = newAge;
            }

            public override void Print()
            {
                base.Print();
                Console.Write(" [Person] " + name + " " + lastName + ", " + age);
            }

            private string name;
            private string lastName;
            private int age;
        }
        #endregion

        #region Car class
        public class Car : MenuItem
        {
            private Car()
            {
            }

            public Car(string newModel, int newYearReleased) : base()
            {
                model = newModel;
                yearReleased = newYearReleased;
            }

            public override void Print()
            {
                base.Print();
                Console.Write(" [Car] " + model + " " + yearReleased);
            }

            private string model;
            private int yearReleased;
        }
        #endregion

        public class DataHolder
        {
            public DataHolder()
            {
                items = new List<MenuItem>();
            }

            public void AddItem(ItemType type)
            {
                if (type == ItemType.MessageType)
                {
                    Console.Write("Message: ");
                    Message tempMsg = new Message(Console.ReadLine());
                    items.Add(tempMsg);
                }
                else if (type == ItemType.PersonType)
                {
                    Console.Write("Name: ");
                    string tempName = Console.ReadLine();

                    Console.Write("Last name: ");
                    string tempLastName = Console.ReadLine();

                    Console.Write("Age: ");
                    try
                    {
                        int tempAge = int.Parse(Console.ReadLine());

                        items.Add(new Person(tempName, tempLastName, tempAge));
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine("Incorrect age! Press any key to continue.");
                        Console.ReadKey(true);
                        return;
                    }
                }
                else if (type == ItemType.CarType)
                {
                    Console.Write("Model: ");
                    string tempModel = Console.ReadLine();

                    Console.Write("Year released: ");
                    try
                    {
                        int tempYear = int.Parse(Console.ReadLine());

                        if (tempYear < 0 || tempYear > DateTime.Now.Year)
                        {
                            throw new Exception("Year is smaller that zero or greater the current year!");
                        }
                        items.Add(new Car(tempModel, tempYear));
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine("Incorrect age! Press any key to continue.");
                        Console.ReadKey(true);
                        return;
                    }
                }
            }
            public void PrintData()
            {
                for (int i = 0; i < items.Count; ++i)
                {
                    Console.Write(i + 1 + ". ");
                    items[i].Print();
                    Console.WriteLine();
                }
                Console.ReadKey(true);
            }
            public void RemoveItem(int itemNumber)
            {
                if (itemNumber < 1 || itemNumber > items.Count)
                {
                    Console.Write("No such item number! Press any key to continue.");
                    Console.ReadKey(true);
                    return;
                }

                items.RemoveAt(itemNumber - 1);
            }

            private List<MenuItem> items;
        }

        public class MainMenu
        {
            private DataHolder dataHolder;

            public MainMenu()
            {
                dataHolder = new DataHolder();
            }

            public void Start()
            {
                char currentChoice = '1';

                while(true)
                {
                    Console.Clear();
                    Console.WriteLine("1. Print items");
                    Console.WriteLine("2. Add item");
                    Console.WriteLine("3. Remove item");
                    Console.WriteLine("Q. Exit");

                    currentChoice = Console.ReadKey(true).KeyChar;

                    if (currentChoice == '1')
                    {
                        Console.Clear();
                        dataHolder.PrintData();
                    }
                    else if (currentChoice == '2')
                    {
                        Console.Clear();
                        Console.WriteLine("1. Message");
                        Console.WriteLine("2. Person");
                        Console.WriteLine("3. Car");

                        char itemChoice = Console.ReadKey().KeyChar;

                        Console.Clear();
                        if (itemChoice == '1')
                        {
                            dataHolder.AddItem(ItemType.MessageType);
                        }
                        else if (itemChoice == '2')
                        {
                            dataHolder.AddItem(ItemType.PersonType);
                        }
                        else if (itemChoice == '3')
                        {
                            dataHolder.AddItem(ItemType.CarType);
                        }
                        else
                        {
                            Console.Write("No such option! Press any key to continue.");
                            return;
                        }
                    }
                    else if (currentChoice == '3')
                    {
                        Console.Clear();
                        Console.Write("Delete item number: ");

                        int deleteNum = -1;
                        try
                        {
                            deleteNum = int.Parse(Console.ReadLine());

                            dataHolder.RemoveItem(deleteNum);
                        }
                        catch (Exception e)
                        {
                            Console.Write("Incorrect number! Press any key to continue");
                        }
                    }
                    else if (currentChoice == 'Q' || currentChoice == 'q')
                    {
                        break;
                    }
                }
            }

        }
        static void Main(string[] args)
        {
            MainMenu menu = new MainMenu();

            menu.Start();
        }
    }
}